Machine for indenting stitched surfaces



(No Model.) 2 Sheets-Sheet 1.

J. .V. ALLEN.

MACHINE FOR INDENTING STITGHED SURFACES.

No. 540,291. Patented June 4, 1895. V

(No Model.) 2 Sheets-Sheet 2.

J. V. ALLEN. MACHINE FOR INDENTING STITGHED SURFACES. No. 540,291. Patented June 4, 1895.

WITNESSES: INVEN'IIII 1-1:

THE uonms PiTERS cu. wore-Laue WASHINGT'ON. 0. c4

JOHN V. ALLEN, OF SOUTH VVEYMOUTI-I, MASSACHUSETTS.

MACHINE FOR INDENTING'STITCHED SURFACES.

SPECIFICATION forming part of Letters Patent No. 540,291, dated June 4, 1895.

Application filed October 8,18%.

T0 aZZ whom it may concern.-

Be it known that I, JOHN V. ALLEN, of South Weymouth, in the county of Norfolk and State of Massachusetts, have invented certain new and useful Improvements in Machines for Indenting Stitched Surfaces, of which the following is a specification.

This invention relates to mechanism for forming indentations or creases between fair stitches on the exposed upper edges of fairstitched boot and shoe soles; and it has for its object to provide a simple and efficient machine adapted to form said indentations.

The invention consists in the combination of a work-support, a work-indenting feed-dog, mechanism for giving said dog work-indenting and work-feeding movements, an auxiliary indenting tool arranged to co-operate with said dog in indenting the work, and mechanism for moving said tool toward and from the work and holding it upon the work while the feed-dog is making its return movement, the arrangement being such that the feed-dog first descends upon the work, partially indenting the same, then moves laterally to feed the work, then remains stationary while the auxiliary tool descends beside, the feed-dog and co-operates with the latter in forming an indentation, and then rises and moves backward ready to again descend upon the work, the auxiliary tool remaining upon the Work during the upward and backward movement of the feed-dog, and rising after the feed-dog has engaged the work and before the work-feeding movement thereof.

Of the accompanying drawings, forming a part of this specification, Figure 1 represents an end elevation of a machine embodying my invention. Fig. 2 represents a side elevation of the same. Fig. 3 represents atop plan view. Figs. 4, 5, 6, 7, and 8 represent views illustrating the different steps in the operation of the machine. Fig. 9 represents a perspective view of the toe portion of a boot, showing the part that is indented and ornamented by the operation of the machine.

The same letters and numerals of reference indicate the same parts in all the figures.

In the drawings, 0!. represents a work-support which is preferably a disk mounted to rotate loosely upon a yieldingly supported seen No. 525,268. (No model.)

journal I) which is held upwardly by spring pressure and is adapted to yield in a downward direction. The journal 1) is here shown as formed on an arm or lever 27 which is pivoted at b to a fixed support and is pressed upwardly by a spring b against a fixed stop b 0 represents a gage which projects over the upper portion of the wheel a and serves to limit the inward movement of a sole 8 to be indented, said gage being here shown as a horizontal disk mounted to rotate loosely on an arm 0', the latter being preferably pivotally connected to the frame of the machine by a cross-bar c which is fitted to turn in bearings on the frame of the machine, so that the gage 0 can rise and fall with the worksupport or wheel a.

d representsthe work-indenting feed-dog, which is located over the work-support and is adapted to rise and fall so as to alternately bear upon and leave the upper edge of a boot sole resting on said support, and is also adapted to move laterally, its movement being in one direction when depressed and in contact with the sole, and in the opposite direction when raised from the sole, so that said dog indents and feeds the sole, the dog having a chisel point the outer side 2 of which is inclined, as shown in Fig. 1. The mechanism here shown for giving the feed-dog the described movements comprises, first, a lever d to one end of which the dog is attached; second, a yoke or frame 01 to which said 1ever is attached, said yoke being provided with socketed ears d d fitted to turn upon a cylindrical shaft 07, supported by the frame of the machine, said yoke being movable length wise of said shaft to give the feed-dog its lateral movements; third, a cam d on the driving-shaft at, said cam co-operating with a trundle-roll d on the rear end of the lever d in giving the dog d its up-and-down movements, the trundle-roll al being held against the perimeter of the cam 01 by a spring d suitably connected with the lever d and with the frame of the machine; fourth, a lever d pivoted at 01 to a fixed support and engaged at oneend with a stud (Z affixed to the yoke (1 and, fifth, a cam (1 on one side of a disk or pulley 01 on the driving-shaft d said cam co-operating with a trundle-roll d on the le ICO ver 61 and with a spring 01 acting on the yoke d in giving the yoke and the lever d and its feed-dog the described lateral movement.

e represents the auxiliary indenting tool, which is located beside the dog (1 and has a chisel-pointed lower end and an inclined outer side 3. Said tool e is given an up-and-down motion by means of a lever e to one end of which it is affixed, said lever being mounted to oscillate upon the shaft (1 and a cam 00- operating with a trundle-roll e and with a suitable spring a, in oscillating the-lever e and thus the tool 6 vertically, said spring holding the trundle-roll e against the perimeter of the cam c 7 The described mechanism is timed to operate as follows: The boot or shoe sole to beernamented being placed upon the support a with its edge against the gage c and the indenting tool 6 being raised,-and the feed-dog depressed, as shown in Fig. 4, the feed-dog, which has already been caused by its depression to make a partial indentation in the upper surface of the sole, is first "moved in the direct'io'n'of the arrow 6 (Fig. 4)., this movement feeding the Work along one step and bringing the feed-dog into -position for the tool e to co-operate with it, as shown in Fig. 5. The toole then descends and co-operates with the feed-dog in completing the indentation, as shown in Fig. 6. The tool 6 remains depressed and in contact with the work while the feed-dog rises, movesto theright as'shown in Fig. 8, and again descends upon the work; so that the work is at all times controlled either by the feed dog or by the tool 6. The tool 2 rises, as shown in Fig. 4, before 'thefeeding movement of the feed-dog commences.

It will be observed that the outer surfaces of the feed-dog and tool e are inclined to a considerable extent, this inclination causing them to give the desired form to the sides of the indentation which they make in the work. The inclined outer side of the feeddog also facilitates the adjustment of the feed-dog to. the stitches in its descent, said inclination causing the point of the dog to seek the lowest point or bottom of the depression between the'two adjacent stitches, so that the indenting tools or devices are to a certain extent self-adjusting, and are enabled tomark or indent the solo in accordance withthelength of the stitches; or in other words, to make the indentations at the points required to properly divide and distinguish the stitches.

I'do not limit myself to the described mechanical details and may variously modify the same without departing from the spirit of my invention.

As there is liable to be some variation in the length of stitches in different boots and shoes, I have made provision varying the length of the feed movement imparted by the dog d. The "end of said "movement may be made to correspond with the length of the stitches, whatever said length may be. As here shown, the length of the feed movement is determined by means of an adjustable stop-screw'i which is engaged with the frame of the machine, and is arranged to limit the movements of the yoke or holder at to which the feed-dog lever 61 is affixed. The spring 01 moves the yoke or holder (1 toward the stop 2', the movement imparted by the spring being limited by said stop. Consequently, to increase the length of the feed movement, the stop or screw 1' is moved outwardly to increase the length of movement imparted to thesupport 01 and lever d by the spring (1 While to decrease the length of the feed movement, said screw is adjusted in the opposite direction.

I claim 1. Ina machine for indenting stitched sun faces, the combination of a work-support, a Work-indenting feed-dog, mechanism for giving said 'dog work-indenting and work-feeding movements, an auxiliary indenting tool arranged to co-ope'rate with sa'iddog in indenting the work, :andm'echanismfor actuating said tool.

2. In a machine for indenting stitched surfaces, the combination of a work-support, a work-indenting feed-dog, an auxiliary workinden'ting tool, mechanism for moving the auxiliarytool toward and'from the work-support, mechanism for moving the feed-dog toward and from the work-support and toward and from the auxiliary tool, and means for varying the extent of movement of the feeddog away from the auxiliary tool, asset forth.

ICO

3. In amachine for indenting stitched surfaces, the combination of a work-support, a Work-indenting feed-dog, an auxiliary workindenting tool, mechanism for'moving the latter toward and away from the work-support, a lever carrying said feed-dog, a support for said lever which is movable to give the lever lateral motions, means for oscillating said lever to move the feed-dog toward and from the WOIk-SllpPOIl', and mechanism for moving said support to move the feed-dog laterally toward and from the auxiliary tool.

4. In a machine for indenting stitched surfaces, the combination of a work-support, a work-indenting feed-dog, a lever carrying said feed-dog, a movable support for said lever, mechanism for oscillating the lever, mechanism for reciprocatingsaid support, said mechanism including a spring which forces the support in one direction and a cam which forces the support in the opposite direction, and an adjustable stop which determines the extent of movement imparted to the support by the spring and the length of the feeding movement of-the feed-dog.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 26th day of September, A. D. 1894.

JOHN V. ALLEN. Witnesses:

QUINCY L. REED, A. CLARENCE LOUD. 

